28505120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{821}}^1$

素因数の和:874

約数の個数: 96

約数和(自身を含む): 79543296

約数和(自身を除く): 51038176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 560, 620, 821, 868, 992, 1085, 1120, 1240, 1642, 1736, 2170, 2480, 3284, 3472, 4105, 4340, 4960, 5747, 6568, 6944, 8210, 8680, 11494, 13136, 16420, 17360, 22988, 25451, 26272, 28735, 32840, 34720, 45976, 50902, 57470, 65680, 91952, 101804, 114940, 127255, 131360, 178157, 183904, 203608, 229880, 254510, 356314, 407216, 459760, 509020, 712628, 814432, 890785, 919520, 1018040, 1425256, 1781570, 2036080, 2850512, 3563140, 4072160, 5701024, 7126280, 14252560, 28505120]

約数ペア:

[(1, 28505120), (2, 14252560), (4, 7126280), (5, 5701024), (7, 4072160), (8, 3563140), (10, 2850512), (14, 2036080), (16, 1781570), (20, 1425256), (28, 1018040), (31, 919520), (32, 890785), (35, 814432), (40, 712628), (56, 509020), (62, 459760), (70, 407216), (80, 356314), (112, 254510), (124, 229880), (140, 203608), (155, 183904), (160, 178157), (217, 131360), (224, 127255), (248, 114940), (280, 101804), (310, 91952), (434, 65680), (496, 57470), (560, 50902), (620, 45976), (821, 34720), (868, 32840), (992, 28735), (1085, 26272), (1120, 25451), (1240, 22988), (1642, 17360), (1736, 16420), (2170, 13136), (2480, 11494), (3284, 8680), (3472, 8210), (4105, 6944), (4340, 6568), (4960, 5747)]